科技随记

超声速燃烧冲压喷气发动机

supersonic combustion ramjet

(SCRAMjet)

a contoured compression surface to encourage an isentropic compression behind the shock.

the contour of the compression surface must be quite precise, and it is a point design for the given upstream Mach number. At off-design Mach numbers, even the best designed compression contour will result in shocks.

高超声速飞行器绝对是国之重器，其中发动机和飞行器气动的整体综合是关键。